San Francisco — The U.S. Environmental Protection Agency (EPA) and partners are calling on the nation's architects, builders and others to participate in a competition seeking designs that facilitate reuse and minimize waste. The "Lifecycle Building Challenge"—co-sponsored by the Building Materials Reuse Association, the American Institute of Architects and West Coast Green—invites professionals and students nationwide to submit designs and ideas by May 15, 2007, that support cost-effective disassembly and anticipate the future use of building materials. Students, architects, reuse experts, engineers, builders, product designers, educators and environmental advocates are encouraged to apply for the web-based competition. For more information, visit www.lifecyclebuilding.org.